"Harry spun around to see Hermione pointing her wand at Ron, her expression wild: The little flock of birds was speeding like a hail of fat golden bullets toward Ron, who yelped and covered his face with his hands, but the birds attacked, pecking and clawing at every bit of flesh they could reach."

The Oppugno Jinx[2] (Oppugno) is a spell that directs an object or individual to attack the victim. This curse will cause conjured creatures or other moveable objects under the control of the caster to attack the target.[1]

Harry used this spell non-verbally whilst escaping from Yaxley in the Ministry of Magic. The result was to cause the inserts for the Daily Prophet; which carried a picture of Harry with the headline "Undesirable No. 1"; to swarm on Yaxley and slow him down.[5]